| Company | Timeline | Status | |
| 12-8 Investments Limited Director • Director | 20 May 2019←6 Years→Current | Active | |
| Atholl Homes (Scotland) Ltd Director • Director | 1 Dec 2012←13 Years→Current | Active | |
| Ritchie Brothers (Public Works Contractors) Limited Director • Company Director | 14 Jun 1989←36 Years→Current | Active | |
| Ritchie Brothers Holdings Limited Director • Company Director | 14 Jun 1989←36 Years→Current | Active | |
| Ritchie Brothers (Scotland) Ltd Director • Company Director | 15 May 1989←34 Years→15 Dec 2023 | Dissolved | |
| R.B. Construction (Redhouse) Ltd Director • Company Director | 17 Jan 1989←36 Years→Current | Active | |
